Buggy code:
public boolean isNaN ( ) { } public boolean isInfinite ( ) { } } public static Test suite ( ) { } public void testConstructors ( ) { } public void testDataInOut ( ) { } public void testMapFunctions ( ) { } public void testBasicFunctions ( ) { RealVectorImpl v1 = new RealVectorImpl ( vec1 ) ; RealVectorImpl v2 = new RealVectorImpl ( vec2 ) ; RealVectorImpl v_null = new RealVectorImpl ( vec_null ) ; RealVectorImplTest . RealVectorTestImpl v2_t = new RealVectorImplTest . RealVectorTestImpl ( vec2 ) ; double d_getNorm = v1 . getNorm ( ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 3.7416573867739413 , d_getNorm ) ; double d_getL1Norm = v1 . getL1Norm ( ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 6.0 , d_getL1Norm ) ; double d_getLInfNorm = v1 . getLInfNorm ( ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 6.0 , d_getLInfNorm ) ; double dist = v1 . getDistance ( v2 ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , v1 . subtract ( v2 ) . getNorm ( ) , dist ) ; double dist_2 = v1 . getDistance ( v2_t ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , v1 . subtract ( v2 ) . getNorm ( ) , dist_2 ) ; double d_getL1Distance = v1 . getL1Distance ( v2 ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 9.0 , d_getL1Distance ) ; double d_getL1Distance_2 = v1 . getL1Distance ( v2_t ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 9.0 , d_getL1Distance_2 ) ; double d_getLInfDistance = v1 . getLInfDistance ( v2 ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 3.0 , d_getLInfDistance ) ; double d_getLInfDistance_2 = v1 . getLInfDistance ( v2_t ) ; assertEquals ( "compare<seq2seq4repair_space>values<seq2seq4repair_space>" , 3.0 , d_getLInfDistance_2 ) ; RealVectorImpl v_add = v1 . add ( v2 ) ; double [ ] result_add = new double [ ] { 5.0 , 7.0 , 9.0 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_add . getData ( ) , result_add , normTolerance ) ; RealVectorImplTest . RealVectorTestImpl vt2 = new RealVectorImplTest . RealVectorTestImpl ( vec2 ) ; RealVector v_add_i = v1 . add ( vt2 ) ; double [ ] result_add_i = new double [ ] { 5.0 , 7.0 , 9.0 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_add_i . getData ( ) , result_add_i , normTolerance ) ; RealVectorImpl v_subtract = v1 . subtract ( v2 ) ; double [ ] result_subtract = new double [ ] { - 3.0 , - 3.0 , - 3.0 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_subtract . getData ( ) , result_subtract , normTolerance ) ; RealVector v_subtract_i = v1 . subtract ( vt2 ) ; double [ ] result_subtract_i = new double [ ] { - 3.0 , - 3.0 , - 3.0 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_subtract_i . getData ( ) , result_subtract_i , normTolerance ) ; RealVectorImpl v_ebeMultiply = v1 . ebeMultiply ( v2 ) ; double [ ] result_ebeMultiply = new double [ ] { 4.0 , 10.0 , 18.0 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_ebeMultiply . getData ( ) , result_ebeMultiply , normTolerance ) ; RealVector v_ebeMultiply_2 = v1 . ebeMultiply ( v2_t ) ; double [ ] result_ebeMultiply_2 = new double [ ] { 4.0 , 10.0 , 18.0 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_ebeMultiply_2 . getData ( ) , result_ebeMultiply_2 , normTolerance ) ; RealVectorImpl v_ebeDivide = v1 . ebeDivide ( v2 ) ; double [ ] result_ebeDivide = new double [ ] { 0.25 , 0.4 , 0.5 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_ebeDivide . getData ( ) , result_ebeDivide , normTolerance ) ; RealVector v_ebeDivide_2 = v1 . ebeDivide ( v2_t ) ; double [ ] result_ebeDivide_2 = new double [ ] { 0.25 , 0.4 , 0.5 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_ebeDivide_2 . getData ( ) , result_ebeDivide_2 , normTolerance ) ; double dot = v1 . dotProduct ( v2 ) ; assertEquals ( "compare<seq2seq4repair_space>val<seq2seq4repair_space>" , 32.0 , dot ) ; double dot_2 = v1 . dotProduct ( v2_t ) ; assertEquals ( "compare<seq2seq4repair_space>val<seq2seq4repair_space>" , 32.0 , dot_2 ) ; <START_BUG> RealMatrixImpl m_outerProduct = v1 . outerProduct ( v2 ) ; <END_BUG> assertEquals ( "compare<seq2seq4repair_space>val<seq2seq4repair_space>" , 4.0 , m_outerProduct . getEntry ( 0 , 0 ) ) ; RealMatrix m_outerProduct_2 = v1 . outerProduct ( v2_t ) ; assertEquals ( "compare<seq2seq4repair_space>val<seq2seq4repair_space>" , 4.0 , m_outerProduct_2 . getEntry ( 0 , 0 ) ) ; RealVector v_unitVector = v1 . unitVector ( ) ; RealVector v_unitVector_2 = v1 . mapDivide ( v1 . getNorm ( ) ) ; assertClose ( "compare<seq2seq4repair_space>vect" , v_unitVector . getData ( ) , v_unitVector_2 . getData ( ) , normTolerance ) ; try { v_null . unitVector ( ) ; fail ( "Expecting<seq2seq4repair_space>ArithmeticException" ) ; } catch ( ArithmeticException ex ) { } catch ( Exception e ) { fail ( "wrong<seq2seq4repair_space>exception<seq2seq4repair_space>caught" ) ; } RealVectorImpl v_unitize = ( ( RealVectorImpl ) ( v1 . copy ( ) ) ) ; v_unitize . unitize ( ) ; assertClose ( "compare<seq2seq4repair_space>vect" , v_unitVector_2 . getData ( ) , v_unitize . getData ( ) , normTolerance ) ; try { v_null . unitize ( ) ; fail ( "Expecting<seq2seq4repair_space>ArithmeticException" ) ; } catch ( ArithmeticException ex ) { } catch ( Exception e ) { fail ( "wrong<seq2seq4repair_space>exception<seq2seq4repair_space>caught" ) ; } RealVectorImpl v_projection = v1 . projection ( v2 ) ; double [ ] result_projection = new double [ ] { 1.662337662337662 , 2.0779220779220777 , 2.493506493506493 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_projection . getData ( ) , result_projection , normTolerance ) ; RealVector v_projection_2 = v1 . projection ( v2_t ) ; double [ ] result_projection_2 = new double [ ] { 1.662337662337662 , 2.0779220779220777 , 2.493506493506493 } ; assertClose ( "compare<seq2seq4repair_space>vect" , v_projection_2 . getData ( ) , result_projection_2 , normTolerance ) ; } public void testMisc ( ) { } public void testPredicates ( ) { } protected void assertClose ( String msg , double [ ] m , double [ ] n , double tolerance ) { }

Fix:
RealMatrix m_outerProduct = v1 . outerProduct ( v2 ) ;